Rocker attachment



FIG. 1 is a side view of one side of the design;

FIG. 2 is a side view of the other side of the design;

FIG. 3 is a top view of the design;

FIG. 4 is a bottom view of the design;

FIG. 5 is a left end elevational view of the design;

FIg. 6 is a right end elevational view of the design;

FIG. 7 is a perspective view of the design;

FIG. 8 is a bottom view of another embodiment of the design; and,

FIG. 9 is a perspective view, the broken lines are for environmentalpurposes only and form no part of the claimed design.

The ornamental design for rocker attachment, as shown and described.